A certain lake has a capacity of 240,000 gallons at the beginning of summer. Over the course of summer, the lake loses water at an increasing rate due to evaporation. For example, during the first few days of summer, the lake loses about 1,000 gallons per day. Towards the end of summer, the lake loses about 2,300 gallons per day. Which of the following could be a graph of the lake's volume, in gallons, as a function of time, in days after the start of summer?

Summary Submit Skip Question

We want to find a graph where the rate of decrease increases as time goes on. Lines don't make sense, since the rate of change is not constant. Out of the remaining two options, the correct answer choice should be the one where the lake volume decreases over time.